降香黄檀在广西南亚热带地区的引种

通过对降香黄檀在广西的引种驯化及其种质资源保存情况的调查,结果表明,降香黄檀在北移5°左右引种到广西南亚热带地区是成功的,能耐受冬季0℃左右的极端低温,适应在≥10℃年积温为7 200℃以上的地区正常生长。在岩溶石灰山地引种造林,不但能适应气候干旱的石灰岩造林区,而且能适应生长在pH值较高的棕色石灰土;树木生长发育正常,能开花结果,生长速度与原产地相似,能长成大径级用材,24年生林分平均高16.8 m,年均高生长0.70 m,平均胸径24.1 cm,年均生长1.00 cm。

The introduction of dalbergia odorifera in southern subtropical area of Guangxi

Based on the introduction and domestication of Dalbergia odorifera in Guangdong, and its species resources conservation,the study showed that it was successful to introduce northward 5° in latitude to southern subtropical area of Guangxi. It could grow well in the extreme lowest temperature about 0℃ and yearly accumulated temperature above 7 200℃(≥10℃).It could not only adapt the drought climate and soil,but also grow and develop well on the soil with high pH in limestone soil which is much different from its indigenous area,Hainan island.It could grow up as a big diameter timber tree as in its indigenous area.The mean height and DBH(diameter at breast height) is respectively 16.8 m and 24.1 cm for a 24-year-old plantation on a Daqingshan Limestone Arboretum,Guangxi,southern China.